We take a look at why this ebike is faulty,

[@darrenrobertshaw8030]

Super informative as usual, the highlight being the sentence, "This little bad boy has got us out of the shit loads of times"! 😂😂

[@darrenrobertshaw8030]

The ebike motor rip off is something I'm very interested in, so I'll be closely following Dave's exploits. Awesome stuff👍

[@TheYorkshireBikeMechanic]

Hi, thank you for watching and your comments, yes I do through the odd strange sentence in there

[@garryhaines3066]

Would send it off to ebike motor centre as recently shown on EMTB fix motors at fraction of the cost of the new

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments.

[@drewgilker417]

Great video thanks. could you please do a video on replacing bosch gen 4 bearing protection ring service kit, the outer seals. and re greasing . many thanks

[@TheYorkshireBikeMechanic]

Great suggestion! will see what i can do

[@drewgilker417]

thanks alot

[@kryten1021]

I've just had my gen 4 fail after 3 1/2 years and 5.5k miles of mainly off road trails and being carefully ridden where water was concerned IE no riding thru very deep puddles or stream crossings swamping the motor altho it's been ridden a lot in the lakes on wet shitty days and wet trails , no power washing and careful cleaning, with a hose and brushes etc the fault was it just kept turning on for a few seconds and then not recognising the battery and turning off within a few seconds , I checked all continuity of the wiring and tried a known purion plugged directly into the drive unit eliminating the kiox i have on , I have two batteries available so i tried the second battery too, and even with the purion plugged into the drive unit and pressing the battery indicator it wouldn't wake the unit up using either battery , I hard reset both batteries just to eliminate that possiblity , I'm pretty good at diagnostics and by that point I had checked everything i could without being plugged into the diagnostic software. I narrowed it down to the pcb at this point. So knowing I'm out of warranty I opened the motor up carefully expecting to see water damage only to find not a sign of any water ingress or visible damage to any of the internal components or the PCB all connectors were good and had been treated to dialectric grease in my early days of owning the bike , all the bearings felt smooth too , so at this point I carefully reassembled the drive unit and took it back to my local supplying dealer to let them see if their software could identify the problem, Im the original owner and asked them to see what they could find as basically I could do no more myself other than just buy a new motor, As soon as they plugged it in they couldn't read any data at all the software couldn't connect so basically they then declared the motor dead.. So using your advice I asked them to reach out to Bosch and put a service report in . Three days later Bosch have come back and offered me a new motor at 50 % discount, now I'm just waiting for the new drive unit to arrive at the shop and get it fitted so like you say Dave it's always worth a try, other than that I had a dead bike, not a cheap fix but a damned sight cheaper than it could have ended up , I also asked them to tell Bosch i have literally just bought another new Whyte with the smart system gen 4 directly before my other bike failed ( sods law ) , I dont know whether that helped sway Bosch but a 50% discount is certainly way better than a bog off your out of warranty . Thanks for your advice Dave

[@TheYorkshireBikeMechanic]

Hi, thank you for watching the channel and your interesting comments. Bosch are happy to help where possible. My only advise is don't remove the case of the new smart motor, work with your dealer if it starts showing errors or misbehaving.

[@kryten1021]

@@TheYorkshireBikeMechanic Cheers Dave hopefully I wont need to touch it at all. but yes it would be back to them rather than open it myself unless it was way out of warranty , but looking at this result Its probably better to let them do it. thanks again for the great advice 🙂

[@TheAntoine191]

How about starting by spraying contact cleaner on the connector. Then as the PCB responds to diagnostic normally, the controller is probably not dead, then it's just a wiring issue. Probably checking the soldering of the connector would solve this.

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments.

[@wonjat5]

Glad to see you back, we’ve missed your videos.🇦🇺

[@TheYorkshireBikeMechanic]

Hi, Thank you for watching and your comments, its good to be back.

[@markf4968]

Great video thanks! Was hoping to see you crack open the motor but still very informative.

[@TheYorkshireBikeMechanic]

Thanks 👍 How to Strip down a Bosch GEN 4 E-bike Motor kzbin.info/www/bejne/hpC3ZIyIfMhsh8k

[@colinwellman9480]

I'm sure that most ebikes don't have a motor failures, at least I hope so as in my eyes 5 years of support and then a potential bill of £720 would take the edge off having ebike. Many thanks for an interesting video.

[@TheYorkshireBikeMechanic]

You are welcome

[@claremontinteriorsmw]

I was thinking whether it worth taking the PCB Out and using some PCB Conformal Coatings on it to completely seal it from the elements

[@paulbuswell6566]

I thought the same. If water has ingressed, then pcb corrosion could be there. It could be as simple as reflowing the solder at the rear of the pcb socket pins. It's obviously talking to the software. I would check the mosfets and any other components for signs of damage

[@TheYorkshireBikeMechanic]

Hi, thanks for watching, yes water plays a big part

[@jameswalton2324]

Anyone ever come across error 73 on a bosch motor

[@BeiLLiac4]

PCB motherboard repair.

[@baznant]

Good to see you back on KZbin Dave. Great vid 👍

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments. Good to be back

[@Emtbtoday]

There a refurbishment motor shop in the UK take your old broken motor as px exchange hell get a fully rebuild on from them for £250! They have just been on a walk round video on a bike channel

[@Emtbtoday]

When this happens om the older power tubes with the green leds fit the battery back to bike and power it on from the battery button itself it should over ride the fault in 90% of cases! Seen people doing this a few time's with the older non smart system! A very important step that has not been done here that could save alot time and money!

[@mikaplum]

You forgot to check the connectors on the Motor itself, could just be a tiny bit of corrosion :D Nice Video tho, always enjoy watching a Master at work :D

[@garth62]

Excellent video, thank you - just a shame internal components are not available seperately especially the main board to save binning the rest of a pobabaly a perfectly usable motor. (just my eco friendly & repair/reuse ethos)

[@TheYorkshireBikeMechanic]

Thank you for watching and your comments

[@Kenneth_R]

I would have cleaned all the connectors on the cables and ports on the motor with contact cleaner. Since its already out of warranty I would open the motor up and look at the circuit board inside to see if water / mud got in there and clean it. A lot of times the board can short or be rendered inoperable due to mud contamination from use or high pressure cleaning.

[@TheYorkshireBikeMechanic]

Hi, thank you for watching and your comments. From experience what you suggest is not going to change things in this case the error code is a terminal one, I’ve tried many times even when motors a clean inside.

[@neekodevinchi]

A good example of how experience can sometimes trump the computer diagnostics to identify the culprit 👊🏿 Good methodical thinking will always identify and rectify ebike issues. Keep up the vids Dave and stay safe👍🏿

[@TheYorkshireBikeMechanic]

Hi, Thank you, hope your well. I still need some help with the m620, will be in touch soon.

[@Extremegaz25]

Top diagnostic report and accessing the problem dave, I work on cars and run a diagnostic report on every car i touch before I remove anything for insurance purposes, it alone can take up to 20 mins on expensive Mercedes. But without the firmware your trying new components like you did, which is impossible on numerous vehicles, good to see you have new bosch parts at the workshop you can change, do you have shimano new parts too? And brose, you definitely need brose if you get my drift!

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments.

[@nickmcdonald42]

Many thanks! I was afraid that you’d solve this before showing us the Bosch software diagnostic, LOL. Will we see rebuilt motors in the future as a fourth option?

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments. Its not a service we will offer, very specialised.

[@Paulo-fr3xm]

Great video Dave, would on of these ebike motor repairs services be able to fix it??

[@TheYorkshireBikeMechanic]

Hi, Thank you for watching and your comments, thats a good question. but truthfully I dont know, be good to hear repairers views.

[@briancrumpacker]

Nice presentation. As a technician I would surely open the motor and inspect for damage before paying for a new one. If there's no warranty, then there's nothing to lose, right?

[@TheYorkshireBikeMechanic]

Hi, thank you for watching and your comments, yes why not, if you have an interest in it.

[@cagonelcopon1]

What’s the typical discount if the bike is 3,5 years old? May be a good idea to open the pub and check if there is a contact burned?

[@TheYorkshireBikeMechanic]

Hi, thanks for watching, each case is taken on its own merits but as a guide it could be up to 50% but the decision is not ours to make.

[@Descendx]

Any issues with chainring locknut on Bosch gen4 coming loose? Having that problem, tightened to specific torque too.

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments., yes replace the rubber oring for a new one

[@maxwest720]

Warms me to see you back.

[@TheYorkshireBikeMechanic]

Hi, thanks for watching and your comments, thank you

[@ingopaul67]

I spend enough maintaining my normal mtb, I don't think I could justify the purchase and maintenance costs of an ebike. Every emtb I know of (several friends have them) have required new motors under warranty.

[@texfromro]

It seems you are a very unfortunate bunch. For what i do i cannot see myself using anything else but an ebike.

[@TheYorkshireBikeMechanic]

Hi, thank you for watching and your comments

[@tomekborucki1120]

You mentioned some "fix-the-issue" solutions but there's one more - fix it. I was thinking you offer that? There are some companies in uk fixing e-bike motors, potentially way cheaper than the new one.

[@TheYorkshireBikeMechanic]

Hi, Thank you for watching and your comments. If it's an internal software error we can not fix this. If its noisy mechanically then potentially I can fix it but I prefer not to, they are very easy to damage without knowing it so I don't do it any more.

[@tomekborucki1120]

@@TheYorkshireBikeMechanic I know that. But you are honest showing what you do and it would be fair to mention that because that's available as a solution.

[@trevorhague4451]

Thanks for another informative contribution Dave. I’m on my third Bosch drive motor in just over five years I have also replaced pthe motor bearings myself purchased from my local bearing supplier for three pounds per bearing. I worked for over thirty years as an engineer doing exactly what you see on the video but not on bikes and it’s clear to me that the overwhelming problem is that the Ingres of water into the drive system is directly or indirectly the main reason for the failure of the system. Bosch must be aware of the lack of any effective seals but do they want to make any changes at seven hundred plus pounds for a new motor I suspect not.

[@johngreen787]

Great video dave ,glad to see you back, 👍 🤘

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments. Good to be back

[@barryjones-c9j]

just take the motor apart and fix the connection why pay for a new motor thats crazy

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments.

[@mondodaftasabrush]

Is there a diagnostic socket for an impulse 2.0 motor when to fault find no pedal assist pedal torque sensor?

[@TheYorkshireBikeMechanic]

Sorry we are not impulse dealers

[@Smallous]

Brilliant video! Can the motor not be repaired via a third party? As a option?

[@TheYorkshireBikeMechanic]

Hi, thanks for watching, some say yes some say no, Personally I would not attempt it.

[@PaulCollis-p7k]

I need to get advice on my scott e-spark

[@TheYorkshireBikeMechanic]

Give me a call during shop hours, 01422 766086

[@garypsutton7563]

Had a cube ebike for 3 years. 2 motors. Had the 2nd rebuilt for £360 and sold the bike. Bosch are s--t. Went back to analogue. Right to repair laws need addressing in the uk.

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments.

[@archie68x]

Wow we really are a throw away society 🙄, when you replace rather than repair a whole motor for potentially a loose wire /connection on a circuit board ! Surely you should be able to replace the faulty electronic component at a fraction of the cost of a whole motor ?🤔 When there nothing wrong with the armature , windings , gears etc its like replacing the whiole motor on your Motorcycle because youve got a faulty Pulser Coil 🤪 If no ones rebuilding/repairing these motors there is a masive market for it , especially once out of warranty 🤔

[@TheYorkshireBikeMechanic]

Hi, getting parts for them is a big issue.

[@aphtonyjim]

Touch Wood 🤞 my 2018 Canyon Spectral On Shimano E8000 motor has been faultless, over 2400km and lots of winter riding ( bikes well looked after and maintained) In you honest opinion who makes the most relatable motor? Also what about sending the motor for repairs to one of two companies that now repairs ebike motors and do exchange motors also.

[@TheYorkshireBikeMechanic]

Hi, thanks for watching and your comments, at the moment I would say Bosch being the most reliable. Yes there are a few that claim to repair but to me it’s not clear what they can or can’t fix and to what extent.

[@derektaylor6713]

I have a 5 year old Cube Hybrid. It's done 6,250 miles with no problems at all with the electrics. Not even the display battery! Have I been lucky so far or what!

[@TheYorkshireBikeMechanic]

Hi, thank you for watching and your comments, I would be interested to learn where abouts you live and what sort of riding you do

[@derektaylor6713]

@@TheYorkshireBikeMechanicHi Dave. Thanks for replying (not many do lol) I'm 72 so I don't often go banging along muddy tracks. I'm in Shaw which is part of lovely Oldham. I'm a fair weather cyclist and mainly stick to main roads and quiet lanes. I don't go out in the rain unless I'm caught out. I only wipe the bike down with a damp cloth when I clean it. The Purion display has still got the original batteries. I've replaced a few items on the bike that have worn out but the electrics have been absolutely no trouble at all. I have my own KZbin chanel with plenty of videos to give you a look at the Cube. It's here to stay. It's more of a touring road bike. As the bike ages and the miles clock up I sometimes film my efforts at home bike mechanicing in the shed which is rather painful and funny to watch at times. It's mainly to let people see how the bike progresses as it (and I ) age. My wife has a Scott Hybrid e bike. (2,600 miles and a bit older than the Cube) and again the Bosch electrics so far have not been a problem but at Sherwood Pines on 1 occasion it read ERROR on her speedo and the power turned off. The speedo was still lit so we switched it off and back on again and it was no trouble after. The day after it did the same but on the final day it was okay. I've cleaned the Scott's dirty and dull battery contacts to see how it goes. We'll find out in a few weeks in Scotland. But my chanel is all about the Cube. When new I did a video of how far I could get in 'ECO' Well, I managed 78.5 miles. So I'm planning to do it again covering similar roads to see how (or if) the 400 watt Bosch battery has degraded. I just need the weather to be a bit kinder. Cheers.

[@sorinmetea578]

Hello. missed the guy with the accent. Pretty sure the motor itself can be repaired. I can feel my fingers wanting to crack it open to figure it out whats wrong. Rule of the thumb, if its not followed by a catastrophic failure, usually the power reșated issues are the easiest to faultfind. Im surprised the video was not starting with a connections schematic for the bike. Also, I would NEVER fit new parts to a faulty scenario without assessing the full schematic because they can get damaged too, and that would not be fun. Dave, it seems to me you need a guy who can repair electronics, as good as you are with mechanics. Cheers.

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments. good to be back

[@josiplovasic7416]

Same case on my e-bike. Worst possible scenario 🫣🫨 + My has obvious internal ratchet teardown after 5000-6000km. Cranks just go round and round 😅

[@TheYorkshireBikeMechanic]

Hi thanks for watching, Ive had 2 like that recently

[@pc9395]

Bosch dealer only diagnostics unlike Bafang which is a much easier and cheaper motor to repair and diagnose faults and spares are readily available..

[@yamyam60]

Surely the motor can be serviceable if not from Bosch from a third party company. If there is a PCB inside the motor, can't this be replaced or repaired?

[@TheYorkshireBikeMechanic]

Hi, thanks for watching and your comments., the internals are speciality components and not many will attempt it, mechanical it can be done but electrical no parts are available

[@liam6200]

I personally find it shocking how bosch get away with fitting these motors to mountain bikes knowing they can't cope with crappy conditions. My bike is 6 month old and in the shop for it's 3rd motor already. It's an absolute joke.

[@TheYorkshireBikeMechanic]

Hi, Thank you for watching and your comments, We try to stay on the fence a little, we experience the same with Shimano two. please watch my my video, entitled "what the chuff is going on with ebike motors"

[@slobodanjovanovic8166]

Why not take the motor aparat and take a look at it? Or as a Bosch dealer you're allowed to just swap the whole unit?

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments. We just swap them out

[@galgtr]

Dear dave you are the biggest expert of all bike's i am sure you fix it. At no problem. Great to see you again.❤

[@TheYorkshireBikeMechanic]

Hi, Thank you for watching and your comments

[@barbaraneville5036]

My Raleigh Stow E Way purchased in June 2023 went back to /Halfords on the 17 December New Pedal crank Sensor fitted on 17th January February 15th Back to halfords and its been in since They haven't got a clue about the tranzx diagnostic programme May well be going to small claims court to get it resolved I told them to change each piece over one at a time to eliminate which compenent is faulty they just don't listen I watched that closely to see how a proper technician fault finds . Any tips on what the issue is ?

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments. Raleigh is well supported, they should be on to them for help. They have a good support team in Raleigh

[@barbaraneville5036]

@@TheYorkshireBikeMechanic Have spoken to raleigh myself twice now Halfords just doesn't let Raleigh know if they tried what Raleigh suggests so just shuts the case down Thing is Raleigh won't sell the parts to anybody if they are not a dealer .So pretty much in Limbo cycle less 😞 thanks for the reply though

[@davekaye32]

Hi, please don’t give up, send a letter to Halfords head office and Raleigh.

[@barbaraneville5036]

@@TheYorkshireBikeMechanic I think the issue has now been resolved I think the letter of intent I sent via email to start court proceedings if not repaired or replaced within 14 days has had a motivational effect

[@nicod974]

The most common repair I encounter is ''burned motors'' with shunt modded controllers... Burned controller comes second.

[@TheYorkshireBikeMechanic]

Hi, Thank you for watching and your comments

[@uptowndisco2]

what is a shunt modded controller , is it like the speedboxes you can buy for Bosch motors ?

[@siriosstar4789]

is this not a rare event with bosch ? i haven't heard of many failures from Bosch .

[@TheYorkshireBikeMechanic]

Hi, Thank you for watching and your comments, yes it is rare when you take into account the amount of bosch powered bikes out there.

[@siriosstar4789]

How about Brose ? they have a history of failures . Has the company resolved these issues on today's models ?

[@badboyx1985x]

5v powerrail try put a battery bank on the purion the mine worked after that🎉only can start the bike with a powerbank

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments.

[@mickd6942]

Excellent video

[@TheYorkshireBikeMechanic]

Thank you very much!

[@micktheshaggy3977]

Looks like the PCB issue, most probably from the moisture ingress / condensation (what else)? AFAIK this PCB is not moisture protected. IMHO this is criminal that they do not do it in the factory. It would cost them a quid. Looks to me like a planned obsolescence of the product. What about all these eco / sustainability claims?

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments.

[@JasperJanssen]

They’ve got pretty darn good moisture seals on the motor as a whole. Conformal coating might not cost a lot but it’s not necessarily a great fit for power electronics that need cooling. And it makes repair harder, as well.

[@mtbing666]

Do you know why an error code appears every time I flat land jumps at a high speed? Accelerator Sensor error on my Bosch CX Performance Gen 4?

[@TheYorkshireBikeMechanic]

Hi, thank you for watching and your comments, can you remember which error code it is

[@mtbing666]

Hi the error code was 511001@@TheYorkshireBikeMechanic

[@aston108]

Off to the ebike motor centre then?

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments.

[@newbeginnings8566]

Another high quality Bosch product...... Investigate motor repair rather than paying for an expensive replacement...

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments. Its not really a user serviceable part unless its noisy

[@torenordmark7127]

Great video

[@TheYorkshireBikeMechanic]

Glad you enjoyed it, thanks for watching.

[@zl1rdnz]

It is not the motor ... it is the controller electronics in the motor housing

[@TheYorkshireBikeMechanic]

Hi, thanks for watching and your comments

[@tomekborucki1120]

How much do you charge for system diagnostics as shown here?

[@TheYorkshireBikeMechanic]

Hi, Thank you for watching and your comments, the charge is £25.00

[@nbandpinportugal]

So, how long do the manufacturers guarantee the components and the bike in general ?

[@TheYorkshireBikeMechanic]

motors normally have 2 years warranty, elkectrical components 12 months unless specified different.

[@alanworland9478]

Dry joint on PCB?

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments.

[@leeshaw4364]

Good video top bloke thank you lee

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments.

[@papalegba6796]

Something else to look forward to going wrong on my useless money pit ebike 😔

[@TheYorkshireBikeMechanic]

Hi, thank you for watching and your comments

[@kevwalton272]

so what is wrong with the motor?

[@TheYorkshireBikeMechanic]

Hi, Thank you for watching and your comments, internal software error and potentially purion connection issues

[@Extremegaz25]

Morning dave, just caught ya before we go out on mtb.

[@drewgilker417]

im going to avoid water from now on

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments.

[@mickd6942]

Shouldn’t bosh dealers be trained to strip the motor and replace parts of it like the electronics board , I don’t own a bosh bike , the one I’ve done 1.5k miles on is a Chinese bike that would only cost £800 to replace but it’s been everywhere that my mates electric Trek rail has been and most of that pulling a loaded trailer , his first service cost him £500 for parts and the service cost , it’s a dear do by the sound of it , all the parts for mine are available within eight days with only the 23AH battery and the hub motor wheel being expensive but nowhere near bosh prices .

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments.

[@mickd6942]

@@TheYorkshireBikeMechanic I would also add Bosh designed the motor to power an E-bike and while moving parts suffer wear the electronics board is not a moving part , if the motor hasn’t been disassembled by someone not qualified and the motor has not been subject to ether submersion or accident damage then this simply should not happen and if it does it’s up to the manufacturer to put it right ie Bosh .

[@zoranpl]

Death on 1300 miles ...nice...😢

[@nigel22347]

None of test applies in South Africa. Bosch made me buy a new motor, no discount, no sympathy

[@TheYorkshireBikeMechanic]

Hi, Thank you for watching and your comments, that seems harsh

[@jost2741]

Na super, statt die Fehler zu analysieren, mittels Software Update alle Evidenz zerstört, Dr. Watson 😂.

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments.

[@timhull8664]

Options are, the canal.😂

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments., lol

[@josephcox2201]

You can get this motor fix for $250

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments.

[@tomg224]

:(((

[@marbesky]

yamaha motors are way better then bosch just saying

[@TheYorkshireBikeMechanic]

Hi, thank you for watching and your comments

[@marbesky]

@@TheYorkshireBikeMechanic so you agree ?

[@camperp195]

I bought a second hand motor (bosch cx) off e bay for £100,guy didnt know if it was good or not,it was in good condition,so i rebuilt it with all new bearings,had it tested by my LBS bingo,new motor to swap when mine goes wrong.

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments. only problem with that is that each motor is programmed for the bike it went in in the first place

[@hookerjl1]

Back for good👍🏻😎I am excited which option the customer chooses. Please let us all know. Cheers for now🙂👋🏻

[@TheYorkshireBikeMechanic]

Thanks for watching and your comments. Customer choose a new motor.

[@samcadwallader2899]

The lesson learned here is don't buy a Bosch powered bike because they don't allow the end user to buy tools to repair their own property.

[@TheYorkshireBikeMechanic]

Hi, thanks for your comments

[@Smallous]

Brilliant video! Can the motor not be repaired via a third party? As a option?

[@TheYorkshireBikeMechanic]

Thanks for watching and you comments, some say yes others say no